mirror of https://github.com/k3s-io/k3s
101 lines
2.7 KiB
Go
101 lines
2.7 KiB
Go
// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package collector
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import (
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"time"
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"encoding/json"
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"github.com/google/cadvisor/info/v1"
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)
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type Config struct {
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// the endpoint to hit to scrape metrics
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Endpoint EndpointConfig `json:"endpoint"`
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// holds information about different metrics that can be collected
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MetricsConfig []MetricConfig `json:"metrics_config"`
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}
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// metricConfig holds information extracted from the config file about a metric
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type MetricConfig struct {
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// the name of the metric
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Name string `json:"name"`
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// enum type for the metric type
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MetricType v1.MetricType `json:"metric_type"`
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// metric units to display on UI and in storage (eg: MB, cores)
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// this is only used for display.
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Units string `json:"units"`
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// data type of the metric (eg: int, float)
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DataType v1.DataType `json:"data_type"`
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// the frequency at which the metric should be collected
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PollingFrequency time.Duration `json:"polling_frequency"`
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// the regular expression that can be used to extract the metric
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Regex string `json:"regex"`
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}
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type Prometheus struct {
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// the endpoint to hit to scrape metrics
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Endpoint EndpointConfig `json:"endpoint"`
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// the frequency at which metrics should be collected
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PollingFrequency time.Duration `json:"polling_frequency"`
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// holds names of different metrics that can be collected
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MetricsConfig []string `json:"metrics_config"`
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}
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type EndpointConfig struct {
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// The full URL of the endpoint to reach
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URL string
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// A configuration in which an actual URL is constructed from, using the container's ip address
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URLConfig URLConfig
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}
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type URLConfig struct {
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// the protocol to use for connecting to the endpoint. Eg 'http' or 'https'
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Protocol string `json:"protocol"`
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// the port to use for connecting to the endpoint. Eg '8778'
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Port json.Number `json:"port"`
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// the path to use for the endpoint. Eg '/metrics'
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Path string `json:"path"`
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}
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func (ec *EndpointConfig) UnmarshalJSON(b []byte) error {
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url := ""
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config := URLConfig{
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Protocol: "http",
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Port: "8000",
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}
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if err := json.Unmarshal(b, &url); err == nil {
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ec.URL = url
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return nil
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}
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err := json.Unmarshal(b, &config)
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if err == nil {
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ec.URLConfig = config
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return nil
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}
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return err
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}
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